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Lettere Patent No. 81,525, dated August 25, 1868.

IMPROVEMENT IN. SWS.

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TO ALL'WHOM IT ,MAY OONCERNz' y l Be it known that I, (arhORG'` B. MONTGOMERY, of Winslow, in the county of Pike, and State of Indiana, have invented certa-in ynew' and useful Improvements in Saws g and do-herehy declare that the following is a lfull, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making a part of this specification.

My invention consists in the construction and arrangement of the teeth of an upright saw in such 4a .manner that the lumber may be cut even and smooth,'and with less friction and strain on the engine or other machinery than other saws'.

In the annexed drawings, represents the `blade of an ordinary upright saw. The teeth of this blade are.

of-three diilerent forms. The teeth marked. a are those usually employed. The teeth marked 6 are the hooked or cutting-teeth, with their points vor hooks from the teeth a. These teeth Yout or shave on the principle of a gang-e, on the'downward motion of the saw. 1 The teeth marked c are hooked similar to the teeth 6, but the joint or hook end is in the direction just the reverse of thehooks b, and are about one-sixteenth of an inch I shorter than the teeth a or b. These teeth, byther peculiar construction, clear the dust from the centre of the log each wny.

"It will be seen that the teeth a b c are arranged in fours, or,.in other words, as follows: a b a c. Teeth arranged as shown and'speciiied constitute on'e set. t I

Asaw of the aboveiconstruction is simple and effectual. It requires less power to operate it,.andperfor1ns its functions in a'practical manner..V

"Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

The combination of the teeth a b e, the tooth c being shorter than theteeth a'and b, and formed with the t peculiar curved point, and all the diiferent-formed teeth being alternately arranged as herein shown and described.

In testimony'that I claim the foregoing, I have hereunto set my hand, this 30th day of March, 1868.

GEORGE MONTGOMERY.

Witnesses: V

AsAHEL WHITMAN, ELIJAH Luces. 

